100506172 has 24 divisors (see below), whose sum is σ = 189906752. Its totient is φ = 46267200.

The previous prime is 100506169. The next prime is 100506221. The reversal of 100506172 is 271605001.

It is a super-2 number, since 2×100506172² = 20202981220187168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19597 + ... + 24187.

Almost surely, 2^100506172 is an apocalyptic number.

It is an amenable number.

100506172 is a deficient number, since it is larger than the sum of its proper divisors (89400580).

100506172 is a wasteful number, since it uses less digits than its factorization.

100506172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5029 (or 5027 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 100506172 is about 10025.2766545368. The cubic root of 100506172 is about 464.9407131412.

The spelling of 100506172 in words is "one hundred million, five hundred six thousand, one hundred seventy-two".